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<meta property="og:title" content="Xaringan Themer ggplot2 Scales — scale_xaringan" />
<meta property="og:description" content="Lifecycle: Maturing
Color and fill single-color scales for discrete and continuous values,
created using the primary accent color of the xaringanthemer styles." />


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    <h1>Xaringan Themer ggplot2 Scales</h1>
    <small class="dont-index">Source: <a href='https://github.com/gadenbuie/xaringanthemer/blob/master/R/ggplot2.R'><code>R/ggplot2.R</code></a></small>
    <div class="hidden name"><code>scale_xaringan.Rd</code></div>
    </div>

    <div class="ref-description">
    <p><strong>Lifecycle:</strong> <a href='https://www.tidyverse.org/lifecycle/#maturing'>Maturing</a></p>
<p>Color and fill single-color scales for discrete and continuous values,
created using the primary accent color of the xaringanthemer styles.</p>
    </div>

    <pre class="usage"><span class='fu'>scale_xaringan_discrete</span>(
  <span class='kw'>aes_type</span> <span class='kw'>=</span> <span class='fu'><a href='https://rdrr.io/r/base/c.html'>c</a></span>(<span class='st'>"color"</span>, <span class='st'>"colour"</span>, <span class='st'>"fill"</span>),
  <span class='no'>...</span>,
  <span class='kw'>color</span> <span class='kw'>=</span> <span class='kw'>NULL</span>,
  <span class='kw'>direction</span> <span class='kw'>=</span> <span class='fl'>1</span>,
  <span class='kw'>inverse</span> <span class='kw'>=</span> <span class='fl'>FALSE</span>
)

<span class='fu'>scale_xaringan_fill_discrete</span>(<span class='no'>...</span>, <span class='kw'>color</span> <span class='kw'>=</span> <span class='kw'>NULL</span>, <span class='kw'>direction</span> <span class='kw'>=</span> <span class='fl'>1</span>, <span class='kw'>inverse</span> <span class='kw'>=</span> <span class='fl'>FALSE</span>)

<span class='fu'>scale_xaringan_color_discrete</span>(
  <span class='no'>...</span>,
  <span class='kw'>color</span> <span class='kw'>=</span> <span class='kw'>NULL</span>,
  <span class='kw'>direction</span> <span class='kw'>=</span> <span class='fl'>1</span>,
  <span class='kw'>inverse</span> <span class='kw'>=</span> <span class='fl'>FALSE</span>
)

<span class='fu'>scale_xaringan_colour_discrete</span>(
  <span class='no'>...</span>,
  <span class='kw'>color</span> <span class='kw'>=</span> <span class='kw'>NULL</span>,
  <span class='kw'>direction</span> <span class='kw'>=</span> <span class='fl'>1</span>,
  <span class='kw'>inverse</span> <span class='kw'>=</span> <span class='fl'>FALSE</span>
)

<span class='fu'>scale_xaringan_continuous</span>(
  <span class='kw'>aes_type</span> <span class='kw'>=</span> <span class='fu'><a href='https://rdrr.io/r/base/c.html'>c</a></span>(<span class='st'>"color"</span>, <span class='st'>"colour"</span>, <span class='st'>"fill"</span>),
  <span class='no'>...</span>,
  <span class='kw'>color</span> <span class='kw'>=</span> <span class='kw'>NULL</span>,
  <span class='kw'>begin</span> <span class='kw'>=</span> <span class='fl'>0</span>,
  <span class='kw'>end</span> <span class='kw'>=</span> <span class='fl'>1</span>,
  <span class='kw'>inverse</span> <span class='kw'>=</span> <span class='fl'>FALSE</span>
)

<span class='fu'>scale_xaringan_fill_continuous</span>(
  <span class='no'>...</span>,
  <span class='kw'>color</span> <span class='kw'>=</span> <span class='kw'>NULL</span>,
  <span class='kw'>begin</span> <span class='kw'>=</span> <span class='fl'>0</span>,
  <span class='kw'>end</span> <span class='kw'>=</span> <span class='fl'>1</span>,
  <span class='kw'>inverse</span> <span class='kw'>=</span> <span class='fl'>FALSE</span>
)

<span class='fu'>scale_xaringan_color_continuous</span>(
  <span class='no'>...</span>,
  <span class='kw'>color</span> <span class='kw'>=</span> <span class='kw'>NULL</span>,
  <span class='kw'>begin</span> <span class='kw'>=</span> <span class='fl'>0</span>,
  <span class='kw'>end</span> <span class='kw'>=</span> <span class='fl'>1</span>,
  <span class='kw'>inverse</span> <span class='kw'>=</span> <span class='fl'>FALSE</span>
)

<span class='fu'>scale_xaringan_colour_continuous</span>(
  <span class='no'>...</span>,
  <span class='kw'>color</span> <span class='kw'>=</span> <span class='kw'>NULL</span>,
  <span class='kw'>begin</span> <span class='kw'>=</span> <span class='fl'>0</span>,
  <span class='kw'>end</span> <span class='kw'>=</span> <span class='fl'>1</span>,
  <span class='kw'>inverse</span> <span class='kw'>=</span> <span class='fl'>FALSE</span>
)</pre>

    <h2 class="hasAnchor" id="arguments"><a class="anchor" href="#arguments"></a>Arguments</h2>
    <table class="ref-arguments">
    <colgroup><col class="name" /><col class="desc" /></colgroup>
    <tr>
      <th>aes_type</th>
      <td><p>The type of aesthetic to which the scale is being applied.
One of "color", "colour", or "fill".</p></td>
    </tr>
    <tr>
      <th>...</th>
      <td><p>Arguments passed on to either the <span class="pkg">colorspace</span> scale
functions — one of <a href='http://colorspace.R-Forge.R-project.org//reference/scale_colour_discrete_sequential.html'>colorspace::scale_color_discrete_sequential</a>,
<a href='http://colorspace.R-Forge.R-project.org//reference/scale_colour_continuous_sequential.html'>colorspace::scale_color_continuous_sequential</a>,
<a href='http://colorspace.R-Forge.R-project.org//reference/scale_colour_discrete_sequential.html'>colorspace::scale_fill_discrete_sequential</a>, or
<a href='http://colorspace.R-Forge.R-project.org//reference/scale_colour_continuous_sequential.html'>colorspace::scale_fill_continuous_sequential</a> — or to
<a href='https://ggplot2.tidyverse.org/reference/continuous_scale.html'>ggplot2::continuous_scale</a> or <a href='https://ggplot2.tidyverse.org/reference/discrete_scale.html'>ggplot2::discrete_scale</a>.</p></td>
    </tr>
    <tr>
      <th>color</th>
      <td><p>A color value, in hex, to override the default color. Otherwise,
the primary color of the resulting scale is chosen from the xaringanthemer
slide styles.</p></td>
    </tr>
    <tr>
      <th>direction</th>
      <td><p>Direction of the discrete scale. Use values less than 0 to
reverse the direction, e.g. <code>direction = -1</code>.</p></td>
    </tr>
    <tr>
      <th>inverse</th>
      <td><p>If <code>color</code> is not supplied and <code>inverse = TRUE</code>, a primary
color is chosen to work well with the inverse slide styles, namely the
value of <code>inverse_header_color</code></p></td>
    </tr>
    <tr>
      <th>begin</th>
      <td><p>Number in the range of <code>[0, 1]</code> indicating to which point in the color scale the smallest data value should be mapped.</p></td>
    </tr>
    <tr>
      <th>end</th>
      <td><p>Number in the range of <code>[0, 1]</code> indicating to which point in the color scale the largest data value should be mapped.</p></td>
    </tr>
    </table>


    <h2 class="hasAnchor" id="examples"><a class="anchor" href="#examples"></a>Examples</h2>
    <pre class="examples"><div class='input'><span class='co'># Requires ggplot2</span>
<span class='no'>has_ggplot2</span> <span class='kw'>&lt;-</span> <span class='fu'><a href='https://rdrr.io/r/base/ns-load.html'>requireNamespace</a></span>(<span class='st'>"ggplot2"</span>, <span class='kw'>quietly</span> <span class='kw'>=</span> <span class='fl'>TRUE</span>)

<span class='kw'>if</span> (<span class='no'>has_ggplot2</span>) {
  <span class='fu'><a href='https://rdrr.io/r/base/library.html'>library</a></span>(<span class='no'>ggplot2</span>)
  <span class='co'># Saving the theme to a temp file because this is an example</span>
  <span class='no'>path_to_css_file</span> <span class='kw'>&lt;-</span> <span class='fu'><a href='https://rdrr.io/r/base/tempfile.html'>tempfile</a></span>(<span class='kw'>fileext</span> <span class='kw'>=</span> <span class='st'>".css"</span>)

  <span class='co'># Create the xaringan theme: dark blue background with teal green accents</span>
  <span class='fu'><a href='style_duo.html'>style_duo</a></span>(
    <span class='kw'>primary_color</span> <span class='kw'>=</span> <span class='st'>"#002b36"</span>,
    <span class='kw'>secondary_color</span> <span class='kw'>=</span> <span class='st'>"#31b09e"</span>,
    <span class='co'># Using basic fonts for this example, but the plot theme will</span>
    <span class='co'># automatically use your theme font if you use Google fonts</span>
    <span class='kw'>text_font_family</span> <span class='kw'>=</span> <span class='st'>"sans"</span>,
    <span class='kw'>header_font_family</span> <span class='kw'>=</span> <span class='st'>"serif"</span>,
    <span class='kw'>outfile</span> <span class='kw'>=</span> <span class='no'>path_to_css_file</span>
  )

  <span class='co'># Here's some very basic example data</span>
  <span class='no'>ex</span> <span class='kw'>&lt;-</span> <span class='fu'><a href='https://rdrr.io/r/base/data.frame.html'>data.frame</a></span>(
    <span class='kw'>name</span> <span class='kw'>=</span> <span class='fu'><a href='https://rdrr.io/r/base/c.html'>c</a></span>(<span class='st'>"Couple"</span>, <span class='st'>"Few"</span>, <span class='st'>"Lots"</span>, <span class='st'>"Many"</span>),
    <span class='kw'>n</span> <span class='kw'>=</span> <span class='fu'><a href='https://rdrr.io/r/base/c.html'>c</a></span>(<span class='fl'>2</span>, <span class='fl'>3</span>, <span class='fl'>5</span>, <span class='fl'>7</span>)
  )

  <span class='co'># Fill color scales demo</span>
  <span class='fu'><a href='https://ggplot2.tidyverse.org/reference/ggplot.html'>ggplot</a></span>(<span class='no'>ex</span>) +
    <span class='fu'><a href='https://ggplot2.tidyverse.org/reference/aes.html'>aes</a></span>(<span class='no'>name</span>, <span class='no'>n</span>, <span class='kw'>fill</span> <span class='kw'>=</span> <span class='no'>n</span>) +
    <span class='fu'><a href='https://ggplot2.tidyverse.org/reference/geom_bar.html'>geom_col</a></span>() +
    <span class='fu'><a href='https://ggplot2.tidyverse.org/reference/labs.html'>ggtitle</a></span>(<span class='st'>"Matching fill scales"</span>) +
    <span class='co'># themed to match the slides: dark blue background with teal text</span>
    <span class='fu'><a href='theme_xaringan.html'>theme_xaringan</a></span>() +
    <span class='co'># Fill color matches teal text</span>
    <span class='fu'>scale_xaringan_fill_continuous</span>()

  <span class='co'># Color scales demo</span>
  <span class='fu'><a href='https://ggplot2.tidyverse.org/reference/ggplot.html'>ggplot</a></span>(<span class='no'>ex</span>) +
    <span class='fu'><a href='https://ggplot2.tidyverse.org/reference/aes.html'>aes</a></span>(<span class='no'>name</span>, <span class='kw'>y</span> <span class='kw'>=</span> <span class='fl'>1</span>, <span class='kw'>color</span> <span class='kw'>=</span> <span class='no'>name</span>) +
    <span class='fu'><a href='https://ggplot2.tidyverse.org/reference/geom_point.html'>geom_point</a></span>(<span class='kw'>size</span> <span class='kw'>=</span> <span class='fl'>10</span>) +
    <span class='fu'><a href='https://ggplot2.tidyverse.org/reference/labs.html'>ggtitle</a></span>(<span class='st'>"Matching color scales"</span>) +
    <span class='co'># themed to match the slides: dark blue background with teal text</span>
    <span class='fu'><a href='theme_xaringan.html'>theme_xaringan</a></span>() +
    <span class='co'># Fill color matches teal text</span>
    <span class='fu'>scale_xaringan_color_discrete</span>(<span class='kw'>direction</span> <span class='kw'>=</span> -<span class='fl'>1</span>)
}</div><div class='img'><img src='scale_xaringan-1.png' alt='' width='700' height='433' /></div><div class='input'>
</div></pre>
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